phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1114 The table 'phpbb_sessions' is full

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('2d7e9cd4014f2d56cecf298f4140d16f', -1, 1462409685, 1462409685, '36537805', -1, 0, 0)

Line : 187
File : sessions.php